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[PowerPC]add testcase for adding store (load float*) pattern, nfc

This commit is contained in:
Chen Zheng 2020-07-17 22:51:00 -04:00
parent 6d247f980d
commit bb07eb944f
1 changed files with 33 additions and 0 deletions
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33
llvm/test/Transforms/SimplifyCFG/PowerPC/prefer-load-i32.ll Normal file
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; RUN: opt < %s -mtriple=powerpc64le-unknown-linux-gnu -simplifycfg -S | \
; RUN: FileCheck %s
define float @foo(float* %src, float* %dest, i32 signext %count, i32 signext %cond) {
; CHECK-LABEL: @foo(
; CHECK-LABEL: entry:
; CHECK: %0 = load float, float* %arrayidx, align 4
entry:
%cmp = icmp sgt i32 %cond, 10
%idxprom = sext i32 %count to i64
%arrayidx = getelementptr inbounds float, float* %src, i64 %idxprom
br i1 %cmp, label %if.then, label %if.else
; CHECK-LABEL: if.then:
; CHECK-NOT: load float
if.then: ; preds = %entry
%0 = load float, float* %arrayidx, align 4
%res = fmul float %0, 3.000000e+00
br label %if.end
; CHECK-LABEL: if.else:
; CHECK-NOT: load float
if.else: ; preds = %entry
%1 = load float, float* %arrayidx, align 4
%idxprom3 = sext i32 %count to i64
%arrayidx4 = getelementptr inbounds float, float* %dest, i64 %idxprom3
store float %1, float* %arrayidx4, align 4
br label %if.end
if.end: ; preds = %if.else, %if.then
%res2.0 = phi float [ %res, %if.then ], [ 0.000000e+00, %if.else ]
ret float %res2.0
}